FIELD: process engineering.
SUBSTANCE: invention relates to interlayer for wind glass and method of its production. Interlayer comprises polymer sheet made from plastified poly(vinyl butyral) containing 40-90 pph of plastifier that features vitrification temperature lower than 25°C. Note here that said intermediate layer features wedge-like shape and has first and second edges. First edge thickness makes, at least, 0.38 mm while that of second edge exceeds the formed by, at least, 0.13 mm. Said sheet ups noise isolation by, at least, 2 dB as compared with equivalent polymer sheet with vitrification temperature of 30 to 33°C.
EFFECT: improved isolation properties of instrumentation panels.
32 cl, 4 tbl, 1 dwg
